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how does snow fall from the sky
In Colorado, graupel is fairly common due to the higher altitude, but it can form anywhere that it snows. Itís just more difficult at lower altitudes because there is a greater height separation between the super-cooled water high above and the ground below. At higher altitudes, like Denver and Colorado Springs, the graupel has less distance to travel before it hits the ground. Conversely, graupel will have to fall an additional mile after forming before it reaches the ground in a location...

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